THIRD DIVISION. 



ACCIPITRINA. 



WITHOUT TRUE EOOT-LEAVES. FORMING IN AUTUMN, 

 AT THE BASE OP THE STEM, CLOSED BUDS, WHICH THE 

 NEXT SEASON BECOMES LEAFY STEMS. PHYLLARIES IN MANY 

 ROWS. HAIRS OP THE PAPPUS RIGID, UNEQUAL. 



a. PSEUDO-PULMOlfAIlE^. 



Stem leafy, occasionally forming small rosettes of leaves at or 

 near the base, similar in appearance to those of the " Ful- 

 monarece," but not persistent during winter. Stem-leaves 

 never clasping. 



26. H. TRIDENTATUM. Stem leafy, sub-corymbose. 



lanceolate or ovate, dentate in the middle with few teeth; 

 lower ones obtuse, narrowed into petioles : upper ones 

 acute, sessile, rounded at the base. Branches and. peduncles 

 slender, nearly or quite leafless. Involucres ovate or rounded 

 at the base, ultimately truncate and constricted in the middle ; 

 with scattered blackish hairs or setse. Phyllaries green, 

 with pale margins, obtuse or sub-acuminate. Florets glab- 

 rous. Styles livid, with dark hairs. 



S. tridentatum. Fries, Symb. p. 171. Gren. & Grodr. p. 183. 

 Bab. Man. Ed. 3, p. 197. Hook. & Am. Ed. 7, p. 225. 

 S. rigidum. Koch. Syn. p. 530. 

 S. riffidim vctr. R Hartmann, Seand. 3, p.- 187. 



